With the new Defender Tactical Universal Cartridge Adapter, any Legacy Mossberg 500, 590, and Maverick 88 12 Ga. can shoot 1-3/4" minishells up to 3" magnum in the same magazine. Save yourself time and money while expanding your control over what you can shoot!
Universal Cartridge Adapter/Mag Follower Kit for Mossberg Pump Shotgun
This kit contains our Patent Pending Universal Cartridge Adapter and low-drag no-snag Magazine Follower which allows smooth cycling of 1 3/4" Minishells up to 3" Magnum 12-Gauge cartridges simultaneously. This kit is compatible with any Mossberg pump-action firearm with machined grooves in the...
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Universal Cartridge Adapter/Mag Follower Kit for Mossberg Pump Shotgun
This kit contains our Patent Pending Universal Cartridge Adapter and low-drag no-snag Magazine Follower which allows smooth cycling of 1 3/4" Minishells up to 3" Magnum 12-Gauge cartridges simultaneously. This kit is compatible with any Mossberg pump-action firearm with machined grooves in the...